wscript_configure_system_mitkrb5

   1 import sys
   2 from waflib import Logs, Options, Errors
   3
   4 # Check for kerberos
   5 have_gssapi=False
   6
   7 krb5_min_required_version = "1.9"
   8
   9 # Required versions
  10 krb5_required_version = krb5_min_required_version
  11 if conf.CONFIG_SET('AD_DC_BUILD_IS_ENABLED'):
  12     krb5_required_version = "1.21"
  13
  14 def parse_version(v):
  15     return tuple(map(int, (v.split("."))))
  16
  17 def krb5_define_syslib(conf, lib, deps):
  18     found = 'FOUND_SYSTEMLIB_' + lib
  19     if found in conf.env:
  20         return
  21     conf.SET_TARGET_TYPE(lib, 'SYSLIB')
  22     conf.SET_SYSLIB_DEPS(lib, deps)
  23     conf.env[found] = True
  24
  25 Logs.info("Looking for kerberos features")
  26 conf.find_program('krb5-config.heimdal', var='HEIMDAL_KRB5_CONFIG')
  27
  28 if isinstance(Options.options.with_system_mitkrb5, list):
  29     path_krb5_config = [x+'/bin' for x in Options.options.with_system_mitkrb5]
  30 else:
  31     path_krb5_config = None
  32
  33 conf.CHECK_CFG(args="--cflags --libs", package="com_err", uselib_store="com_err")
  34 conf.CHECK_FUNCS_IN('_et_list', 'com_err')
  35 conf.CHECK_HEADERS('com_err.h', lib='com_err')
  36
  37 conf.find_program('krb5-config', path_list=path_krb5_config, var='KRB5_CONFIG')
  38 if conf.env.KRB5_CONFIG:
  39     vendor = conf.cmd_and_log(conf.env.KRB5_CONFIG+['--vendor'])
  40     conf.env.KRB5_VENDOR = vendor.strip().lower()
  41     if conf.env.KRB5_VENDOR == 'heimdal':
  42         raise Errors.WafError('--with-system-mitkrb5 cannot be used with system heimdal')
  43
  44     if conf.CHECK_CFG(path=conf.env.KRB5_CONFIG, args="--cflags --libs",
  45                       package="", uselib_store="KRB5"):
  46         if 'krb5' in conf.env['LIB_KRB5']:
  47             krb5_define_syslib(conf, "krb5", conf.env['LIB_KRB5'])
  48         if 'k5crypto' in conf.env['LIB_KRB5']:
  49             krb5_define_syslib(conf, "k5crypto", conf.env['LIB_KRB5'])
  50     else:
  51         raise Errors.WafError('Unable to find required krb5 library!')
  52
  53     if conf.CHECK_CFG(path=conf.env.KRB5_CONFIG, args="--cflags --libs",
  54                       package="gssapi", uselib_store="GSSAPI"):
  55         krb5_define_syslib(conf, "gssapi", conf.env['LIB_GSSAPI'])
  56         if 'gssapi_krb5' in conf.env['LIB_GSSAPI']:
  57             krb5_define_syslib(conf, "gssapi_krb5", conf.env['LIB_GSSAPI'])
  58     else:
  59         raise Errors.WafError('Unable to find required gssapi library!')
  60
  61     if conf.CONFIG_SET('AD_DC_BUILD_IS_ENABLED'):
  62         if conf.CHECK_CFG(path=conf.env.KRB5_CONFIG, args="--cflags --libs",
  63                           package="gssrpc", uselib_store="GSSRPC"):
  64             krb5_define_syslib(conf, "gssrpc", conf.env['LIB_GSSRPC'])
  65
  66         if conf.CHECK_CFG(path=conf.env.KRB5_CONFIG, args="--cflags --libs",
  67                           package="kdb", uselib_store="KDB5"):
  68             krb5_define_syslib(conf, "kdb5", conf.env['LIB_KDB5'])
  69             conf.CHECK_HEADERS('kdb.h', lib='kdb5')
  70         else:
  71             raise Errors.WafError('Unable to find required kdb5 library!')
  72
  73         if conf.CHECK_CFG(path=conf.env.KRB5_CONFIG, args="--cflags --libs",
  74                           package="kadm-server", uselib_store="KADM5SRV_MIT"):
  75             krb5_define_syslib(conf,
  76                                "kadm5srv_mit",
  77                                conf.env['LIB_KADM5SRV_MIT'])
  78             conf.CHECK_FUNCS_IN('kadm5_init', 'kadm5srv_mit')
  79         else:
  80             raise Errors.WafError('Unable to find required kadm5srv_mit '
  81                                   'library!')
  82
  83     conf.define('USING_SYSTEM_KRB5', 1)
  84     del conf.env.HEIMDAL_KRB5_CONFIG
  85     krb5_conf_version = conf.cmd_and_log(conf.env.KRB5_CONFIG+['--version']).strip()
  86
  87     krb5_version = krb5_conf_version.split()[-1]
  88
  89     # drop '-prerelease' suffix
  90     if krb5_version.find('-') > 0:
  91         krb5_version = krb5_version.split("-")[0]
  92
  93     if parse_version(krb5_version) < parse_version(krb5_required_version):
  94         Logs.error('ERROR: The MIT KRB5 build with Samba AD requires at least %s. %s has been found and cannot be used' % (krb5_required_version, krb5_version))
  95         Logs.error('ERROR: If you want to just build Samba FS (File Server) use the option --without-ad-dc which requires version %s' % (krb5_min_required_version))
  96         Logs.error('ERROR: You may try to build with embedded Heimdal Kerberos by not specifying --with-system-mitkrb5')
  97         sys.exit(1)
  98     else:
  99         Logs.info('MIT Kerberos %s detected, MIT krb5 build can proceed' % (krb5_version))
 100
 101     conf.define('USING_SYSTEM_MITKRB5', '"%s"' % krb5_version)
 102
 103 conf.CHECK_HEADERS('krb5.h krb5/locate_plugin.h', lib='krb5')
 104 conf.CHECK_HEADERS('krb5.h krb5/localauth_plugin.h', lib='krb5')
 105 possible_gssapi_headers="gssapi.h gssapi/gssapi_generic.h gssapi/gssapi.h gssapi/gssapi_ext.h gssapi/gssapi_krb5.h gssapi/gssapi_oid.h"
 106 conf.CHECK_HEADERS(possible_gssapi_headers, lib='gssapi')
 107
 108 conf.CHECK_FUNCS_IN('krb5_encrypt_data', 'k5crypto')
 109 conf.CHECK_FUNCS_IN('des_set_key','crypto')
 110 conf.CHECK_FUNCS_IN('copy_Authenticator', 'asn1')
 111 conf.CHECK_FUNCS_IN('roken_getaddrinfo_hostspec', 'roken')
 112
 113 conf.CHECK_HEADERS('profile.h', lib='krb5')
 114
 115 if conf.CHECK_FUNCS_IN('gss_display_status', 'gssapi gssapi_krb5'):
 116     have_gssapi=True
 117
 118 if not have_gssapi:
 119     if conf.env.KRB5_CONFIG and conf.env.KRB5_CONFIG != 'heimdal':
 120         Logs.error("ERROR: WAF build with MIT Krb5 requires working GSSAPI implementation")
 121         sys.exit(1)
 122
 123 conf.CHECK_FUNCS_IN('''
 124        gss_wrap_iov
 125        gss_krb5_import_cred
 126        gss_get_name_attribute
 127        gss_mech_krb5
 128        gss_oid_equal
 129        gss_inquire_sec_context_by_oid
 130        gsskrb5_extract_authz_data_from_sec_context
 131        gss_krb5_export_lucid_sec_context
 132        gss_import_cred gss_export_cred
 133        gss_acquire_cred_from
 134        ''', 'gssapi gssapi_krb5')
 135 conf.CHECK_VARIABLE('GSS_KRB5_CRED_NO_CI_FLAGS_X',
 136         headers=possible_gssapi_headers, lib='gssapi gssapi_krb5')
 137 conf.CHECK_FUNCS('''
 138        krb5_auth_con_getrecvsubkey
 139        krb5_auth_con_getsendsubkey
 140        krb5_set_default_in_tkt_etypes krb5_set_default_tgs_enctypes
 141        krb5_set_default_tgs_ktypes krb5_principal2salt
 142        krb5_c_string_to_key krb5_get_pw_salt krb5_string_to_key_salt krb5_auth_con_setkey
 143        krb5_auth_con_setuseruserkey krb5_get_permitted_enctypes
 144        krb5_get_default_in_tkt_etypes krb5_free_data_contents
 145        krb5_principal_get_comp_string krb5_free_unparsed_name
 146        krb5_free_keytab_entry_contents krb5_kt_free_entry krb5_krbhst_init
 147        krb5_krbhst_get_addrinfo
 148        krb5_crypto_init krb5_crypto_destroy
 149        krb5_c_verify_checksum krb5_principal_compare_any_realm
 150        krb5_parse_name_norealm krb5_princ_size krb5_get_init_creds_opt_set_pac_request
 151        krb5_get_renewed_creds krb5_free_error_contents
 152        initialize_krb5_error_table krb5_get_init_creds_opt_alloc
 153        krb5_get_init_creds_opt_free krb5_get_init_creds_opt_get_error
 154        krb5_enctype_to_string krb5_fwd_tgt_creds krb5_auth_con_set_req_cksumtype
 155        krb5_get_creds_opt_alloc krb5_get_creds_opt_set_impersonate krb5_get_creds
 156        krb5_get_credentials_for_user krb5_get_host_realm krb5_free_host_realm
 157        krb5_get_init_creds_keyblock krb5_get_init_creds_keytab
 158        krb5_make_principal krb5_build_principal_alloc_va
 159        krb5_cc_get_lifetime krb5_cc_retrieve_cred
 160        krb5_cc_copy_creds
 161        krb5_free_checksum_contents krb5_c_make_checksum krb5_create_checksum
 162        krb5_config_get_bool_default krb5_get_profile
 163        krb5_data_copy
 164        krb5_init_keyblock krb5_principal_set_realm krb5_principal_get_type
 165        krb5_principal_set_type
 166        krb5_warnx
 167        krb5_get_prompt_types
 168        krb5_mk_req_extended krb5_kt_compare
 169        krb5_free_enctypes
 170        krb5_free_string
 171        ''',
 172      lib='krb5 k5crypto',
 173      headers='krb5.h')
 174 conf.CHECK_DECLS('''krb5_get_credentials_for_user
 175                     krb5_auth_con_set_req_cksumtype''',
 176                     headers='krb5.h', lib='krb5', always=True)
 177 conf.CHECK_VARIABLE('AP_OPTS_USE_SUBKEY', headers='krb5.h', lib='krb5')
 178 conf.CHECK_VARIABLE('KV5M_KEYTAB', headers='krb5.h', lib='krb5')
 179 conf.CHECK_VARIABLE('KRB5_KU_OTHER_CKSUM', headers='krb5.h', lib='krb5')
 180 conf.CHECK_VARIABLE('KRB5_KEYUSAGE_APP_DATA_CKSUM', headers='krb5.h', lib='krb5')
 181 conf.CHECK_VARIABLE('ENCTYPE_AES128_CTS_HMAC_SHA1_96', headers='krb5.h', lib='krb5', mandatory=True)
 182 conf.CHECK_VARIABLE('ENCTYPE_AES256_CTS_HMAC_SHA1_96', headers='krb5.h', lib='krb5', mandatory=True)
 183 conf.CHECK_DECLS('KRB5_PDU_NONE', reverse=True, headers='krb5.h', lib='krb5')
 184 conf.CHECK_STRUCTURE_MEMBER('krb5_keytab_entry', 'key',
 185                             headers='krb5.h',
 186                             lib='krb5',
 187                             define='HAVE_KRB5_KEYTAB_ENTRY_KEY')
 188 conf.CHECK_STRUCTURE_MEMBER('krb5_keytab_entry', 'keyblock',
 189                             headers='krb5.h',
 190                             lib='krb5',
 191                             define='HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK')
 192 conf.CHECK_STRUCTURE_MEMBER('krb5_address', 'magic',
 193                             headers='krb5.h',
 194                             lib='krb5',
 195                             define='HAVE_MAGIC_IN_KRB5_ADDRESS')
 196 conf.CHECK_STRUCTURE_MEMBER('krb5_address', 'addrtype',
 197                             headers='krb5.h',
 198                             lib='krb5',
 199                             define='HAVE_ADDRTYPE_IN_KRB5_ADDRESS')
 200 conf.CHECK_STRUCTURE_MEMBER('krb5_ap_req', 'ticket',
 201                             headers='krb5.h',
 202                             lib='krb5',
 203                             define='HAVE_TICKET_POINTER_IN_KRB5_AP_REQ')
 204 conf.CHECK_STRUCTURE_MEMBER('krb5_prompt', 'type',
 205                             headers='krb5.h',
 206                             lib='krb5',
 207                             define='HAVE_KRB5_PROMPT_TYPE')
 208 conf.CHECK_CODE('krb5_trace_info', 'HAVE_KRB5_TRACE_INFO',
 209                 headers='krb5.h', lib='krb5')
 210 conf.CHECK_CODE('struct krb5_trace_info', 'HAVE_KRB5_TRACE_INFO_STRUCT',
 211                 headers='krb5.h', lib='krb5')
 212 conf.CHECK_TYPE('krb5_encrypt_block', headers='krb5.h', lib='krb5')
 213
 214 conf.CHECK_CODE('''
 215        krb5_context ctx;
 216        krb5_get_init_creds_opt *opt = NULL;
 217        krb5_get_init_creds_opt_free(ctx, opt);
 218        ''',
 219     'KRB5_CREDS_OPT_FREE_REQUIRES_CONTEXT',
 220     headers='krb5.h', link=False,
 221     lib='krb5',
 222     msg="Checking whether krb5_get_init_creds_opt_free takes a context argument")
 223 conf.CHECK_CODE('''
 224        const krb5_data *pkdata;
 225        krb5_context context;
 226        krb5_principal principal;
 227        pkdata = krb5_princ_component(context, principal, 0);
 228        ''',
 229     'HAVE_KRB5_PRINC_COMPONENT',
 230     headers='krb5.h', lib='krb5',
 231     msg="Checking whether krb5_princ_component is available")
 232
 233 conf.CHECK_CODE('''
 234        int main(void) {
 235        char buf[256];
 236        krb5_enctype_to_string(1, buf, 256);
 237        return 0;
 238        }''',
 239     'HAVE_KRB5_ENCTYPE_TO_STRING_WITH_SIZE_T_ARG',
 240     headers='krb5.h', lib='krb5 k5crypto',
 241     addmain=False, cflags=conf.env['WERROR_CFLAGS'],
 242     msg="Checking whether krb5_enctype_to_string takes size_t argument")
 243
 244 conf.CHECK_CODE('''
 245        int main(void) {
 246        krb5_context context = NULL;
 247        char *str = NULL;
 248        krb5_enctype_to_string(context, 1, &str);
 249        if (str) free (str);
 250        return 0;
 251        }''',
 252     'HAVE_KRB5_ENCTYPE_TO_STRING_WITH_KRB5_CONTEXT_ARG',
 253     headers='krb5.h stdlib.h', lib='krb5',
 254     addmain=False, cflags=conf.env['WERROR_CFLAGS'],
 255     msg="Checking whether krb5_enctype_to_string takes krb5_context argument")
 256 conf.CHECK_CODE('''
 257        int main(void) {
 258        krb5_context ctx = NULL;
 259        krb5_principal princ = NULL;
 260        const char *str = krb5_princ_realm(ctx, princ)->data;
 261        return 0;
 262        }''',
 263     'HAVE_KRB5_PRINC_REALM',
 264     headers='krb5.h', lib='krb5',
 265     addmain=False,
 266     msg="Checking whether the macro krb5_princ_realm is defined")
 267 conf.CHECK_CODE('''
 268        int main(void) {
 269            krb5_context context;
 270            krb5_principal principal;
 271            const char *realm; realm = krb5_principal_get_realm(context, principal);
 272            return 0;
 273        }''',
 274     'HAVE_KRB5_PRINCIPAL_GET_REALM',
 275     headers='krb5.h', lib='krb5',
 276     addmain=False,
 277     msg="Checking whether krb5_principal_get_realm is defined")
 278 conf.CHECK_CODE('''
 279        krb5_enctype enctype;
 280        enctype = ENCTYPE_ARCFOUR_HMAC_MD5;
 281        ''',
 282     '_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5',
 283     headers='krb5.h', lib='krb5',
 284     msg="Checking whether the ENCTYPE_ARCFOUR_HMAC_MD5 key type definition is available")
 285 conf.CHECK_CODE('''
 286        krb5_enctype enctype;
 287        enctype = ENCTYPE_ARCFOUR_HMAC_MD5_56;
 288        ''',
 289     '_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5_56',
 290     headers='krb5.h', lib='krb5',
 291     msg="Checking whether the ENCTYPE_ARCFOUR_HMAC_MD5_56 key type definition is available")
 292 conf.CHECK_CODE('''
 293        krb5_keytype keytype;
 294        keytype = KEYTYPE_ARCFOUR_56;
 295        ''',
 296     '_HAVE_KEYTYPE_ARCFOUR_56',
 297     headers='krb5.h', lib='krb5',
 298     msg="Checking whether the HAVE_KEYTYPE_ARCFOUR_56 key type definition is available")
 299 if conf.CONFIG_SET('_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5') and conf.CONFIG_SET('_HAVE_KEYTYPE_ARCFOUR_56'):
 300     conf.DEFINE('HAVE_ENCTYPE_ARCFOUR_HMAC_MD5', '1')
 301 if conf.CONFIG_SET('_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5_56') and conf.CONFIG_SET('_HAVE_KEYTYPE_ARCFOUR_56'):
 302     conf.DEFINE('HAVE_ENCTYPE_ARCFOUR_HMAC_MD5_56', '1')
 303
 304 conf.CHECK_CODE('''
 305        krb5_enctype enctype;
 306        enctype = ENCTYPE_ARCFOUR_HMAC;
 307        ''',
 308     'HAVE_ENCTYPE_ARCFOUR_HMAC',
 309     headers='krb5.h', lib='krb5',
 310     msg="Checking whether the ENCTYPE_ARCFOUR_HMAC key type definition is available")
 311 conf.CHECK_CODE('''
 312        krb5_enctype enctype;
 313        enctype = ENCTYPE_ARCFOUR_HMAC_EXP;
 314        ''',
 315     'HAVE_ENCTYPE_ARCFOUR_HMAC_EXP',
 316     headers='krb5.h', lib='krb5',
 317     msg="Checking whether the ENCTYPE_ARCFOUR_HMAC_EXP key type definition is available")
 318
 319 conf.CHECK_CODE('''
 320        krb5_context context;
 321        krb5_keytab keytab;
 322        krb5_init_context(&context);
 323        return krb5_kt_resolve(context, "WRFILE:api", &keytab);
 324        ''',
 325     'HAVE_WRFILE_KEYTAB',
 326     headers='krb5.h', lib='krb5', execute=True,
 327     msg="Checking whether the WRFILE -keytab is supported")
 328 # Check for KRB5_DEPRECATED handling
 329 conf.CHECK_CODE('''#define KRB5_DEPRECATED 1
 330        #include <krb5.h>''',
 331    'HAVE_KRB5_DEPRECATED_WITH_IDENTIFIER', addmain=False,
 332     link=False,
 333     lib='krb5',
 334     msg="Checking for KRB5_DEPRECATED define taking an identifier")
 335
 336 conf.CHECK_CODE('''
 337        krb5_creds creds;
 338        creds.flags.b.initial = 0;
 339        ''',
 340     'HAVE_FLAGS_IN_KRB5_CREDS',
 341     headers='krb5.h', lib='krb5', execute=False,
 342     msg="Checking whether krb5_creds have flags property")
 343
 344 # Check for MIT KDC
 345 if conf.CONFIG_SET('AD_DC_BUILD_IS_ENABLED'):
 346     Logs.info("Looking for MIT KDC")
 347     conf.DEFINE('SAMBA_USES_MITKDC', 1)
 348
 349     kdc_path_list = [ '/usr/sbin', '/usr/lib/mit/sbin']
 350
 351     if getattr(Options.options, 'with_system_mitkdc', None):
 352         conf.DEFINE('MIT_KDC_PATH', '"' + Options.options.with_system_mitkdc + '"')
 353     else:
 354         conf.find_program('krb5kdc', path_list=kdc_path_list, var='MIT_KDC_BINARY', mandatory=True)
 355         conf.DEFINE('MIT_KDC_PATH', '"' + " ".join(conf.env.MIT_KDC_BINARY) + '"')